Concrete bridge and headwall unit



FIG. 1 is an end view of a concrete bridge and headwall unit and showing our new design;

FIG. 2 is a top view thereof, with a middle portion broken away to disclose indefinite length; and,

FIG. 3 is a side view thereof, with a middle portion broken away to disclose indefinite length, the opposite side view being the same. 

The ornamental design of a concrete bridge and headwall unit, as shown and described. 